1. Public Record Office (undated) Records Information, Sheet 115 Military maps of World War I
2. The development of meteorology over the last 150 years as illustrated by historical weather charts;Grahame;Weather,2000
3. Daily synoptic weather maps from the 1780s: A research project of synoptic climatology;Kington;Meteorol. Mag.,1975
4. The Weather of the 1780s Over Europe